You rarely go wrong with the Peterson Field Guides. Amphibians seem especially threatened by climate change. We need to know and protect them. Another good book, by Donald W. Linzey and Michael J. Clifford, is Snakes of Virginia.
This book used to be subtitled "Invertebrates and Seaweeds of the Atlantic Coast from the Bay of Fundy to Cape Hatteras." It helped me identify comb jellies and a few other weird beasties near Chesapeake Bay.
Subjects include snow crystals and snow ecology, birds' nests and winter bird behavior, evidence of insects, animals tracks and signs, winter weeds and wildflowers, evergreen plants, and wintering trees.
Enables birders to recognize birds of eastern and central North America by their songs and calls. Points out exactly what to listen for to tell one bird from another. Available on both cassette and CD.
It's not exactly field guide-sized, but IS "an illustrated guide to fishes, invertebrates, and plants of bays and inlets from Cape Cod to Cape Hatteras." It also discusses the natural history of the organisms. Yay!